1.   Different tribes often use different colours and combinations of feathers to identify themselves.

2.   Many tribes have used revenues to improve living standards and supplement government-funded programs in social services, healthcare and education.

3.   The tribes used to roam around freely, without any fixed territory.

4.   The tribes use a system of barter.

5.   And in Mexico, some tribes used peyote to induce hallucinations.

6.   But, because of the murky nature of classifying gaming, some tribes have used the existence of state lotteries or charity bingo to argue for opening up casinos.

7.   Indeed, some tribes have used paintings to dramatize their land claims against the Australian government.

8.   Its skin secretion is poisonous, which is why indigenous tribes use the secretion on arrowheads.

9.   Many tribes are using federal money to set up programs to monitor and enforce environmental quality.

10.   Native American tribes have used old recordings to learn forgotten languages, and educators nationwide use information from the center in teaching.